<template>
  <div class="app-container">
    <h2 style="text-align: center;">发布新课程</h2>

    <el-steps :active="2" process-status="wait" align-center style="margin-bottom: 40px;">
      <el-step title="填写课程基本信息" />
      <el-step title="创建课程大纲" />
      <el-step title="最终发布" />
    </el-steps>

<el-button type="text" @click="openChapterDialog()">添加章节</el-button>

    <ul class="chanpterList">
      <li v-for="chapter in chapterVideoList" :key="chapter.id">
        <p>{{ chapter.title }}
          <span class="acts">
            <el-button style="" type="text" @click="openVideo(chapter.id)">添加小节</el-button>
                <el-button style="" type="text" @click="openEditChapter(chapter.id)">编辑</el-button>
                <el-button type="text" @click="removeChapter(chapter.id)">删除</el-button>
            </span>
        </p>
        <ul class="chanpterList videoList">
          <li v-for="video in chapter.children" :key="video.id">
            <p>{{ video.title }}
                <span class="acts">
                    <el-button style="" type="text">编辑</el-button>
                    <el-button type="text" @click="removeVideo(video.id)">删除</el-button>
                </span>
            </p>
          </li>
        </ul>
      </li>
    </ul>
    <div>
      <el-button @click="previous">上一步</el-button>
      <el-button :disabled="saveBtnDisabled" type="primary" @click="next">下一步</el-button>
    </div>

<!-- 添加和修改章节表单 -->
<el-dialog :visible.sync="dialogChapterFormVisible" title="添加章节">
    <el-form :model="chapter" label-width="120px">
        <el-form-item label="章节标题">
            <el-input v-model="chapter.title"/>
        </el-form-item>
        <el-form-item label="章节排序">
            <el-input-number v-model="chapter.sort" :min="0" controls-position="right"/>
        </el-form-item>
    </el-form>
    <div slot="footer" class="dialog-footer">
        <el-button @click="dialogChapterFormVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveOrUpdate">确 定</el-button>
    </div>
</el-dialog>

    <!-- 添加和修改课时表单 -->
<el-dialog :visible.sync="dialogVideoFormVisible" title="添加课时">
  <el-form :model="video" label-width="120px">
    <el-form-item label="课时标题">
      <el-input v-model="video.title"/>
    </el-form-item>
    <el-form-item label="课时排序">
      <el-input-number v-model="video.sort" :min="0" controls-position="right"/>
    </el-form-item>
    <el-form-item label="是否免费">
      <el-radio-group v-model="video.free">
        <el-radio :label="true">免费</el-radio>
        <el-radio :label="false">默认</el-radio>
      </el-radio-group>
    </el-form-item>
    <el-form-item label="上传视频">
     <el-upload
            :on-success="handleVodUploadSuccess"
            :on-remove="handleVodRemove"
            :before-remove="beforeVodRemove"
            :on-exceed="handleUploadExceed"
            :file-list="fileList"
            :action="BASE_API+'/eduvod/video/uploadAlyiVideo'"
            :limit="1"
            class="upload-demo">
        <el-button size="small" type="primary">上传视频</el-button>
        <el-tooltip placement="right-end">
            <div slot="content">最大支持1G，<br>
                支持3GP、ASF、AVI、DAT、DV、FLV、F4V、<br>
                GIF、M2T、M4V、MJ2、MJPEG、MKV、MOV、MP4、<br>
                MPE、MPG、MPEG、MTS、OGG、QT、RM、RMVB、<br>
                SWF、TS、VOB、WMV、WEBM 等视频格式上传</div>
            <i class="el-icon-question"/>
        </el-tooltip>
        </el-upload>
    </el-form-item>
  </el-form>
  <div slot="footer" class="dialog-footer">
    <el-button @click="dialogVideoFormVisible = false">取 消</el-button>
    <el-button :disabled="saveVideoBtnDisabled" type="primary" @click="saveOrUpdateVideo">确 定</el-button>
  </div>
</el-dialog>

  </div>
</template>
<script>
import chapter from '@/api/edu/chapter'
import video from '@/api/edu/video'
export default {
  data() {
    return {
      saveVideoBtnDisabled:false,
      saveBtnDisabled: false,
      courseId: '',
      chapterVideoList: [],
      dialogChapterFormVisible:false,//章节弹框
      dialogVideoFormVisible:false,//xiaojie
      fileList: [],//上传文件列表
      BASE_API: process.env.BASE_API, // 接口API地址
      
      chapter:{
             title:'',
             sort:0
      },
      video:{
        title:'',
        sort:0,
        free:0,
        videoSourceId:'',
        videoOriginalName:''//视频名称
      }
    }
  },
  created() {
    console.log("===========" + this.$route.params.id);
    if (this.$route.params && this.$route.params.id) {
      this.courseId = this.$route.params.id;
      console.log("===========" + this.courseId);
      this.getChapterVideo(this.courseId);
    }
  },
  methods: {
        handleVodRemove() {
            //调用接口的删除视频的方法
            video.deleteAliyunvod(this.video.videoSourceId)
                .then(response => {
                    this.$message({
                        type: 'success',
                        message: '删除视频成功!'
                    });
                    //把文件列表清空
                    this.fileList = []
                    //把video视频id和视频名称值清空
                    this.video.videoSourceId = ''
                    this.video.videoOriginalName = ''
                })
        },
         //点击×调用这个方法
        beforeVodRemove(file,fileList) {
            return this.$confirm(`确定移除 ${ file.name }?`);
        },
        //上传视频成功调用的方法
        handleVodUploadSuccess(response, file, fileList) {
            this.video.videoSourceId = response.data.videoId//视频id和name赋值
            this.video.videoOriginalName = file.name
        },
        handleUploadExceed() {
            this.$message.warning('想要重新上传视频，请先删除已上传的视频')
        },
//删除小节
        removeVideo(id) {
            this.$confirm('此操作将删除小节, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).then(() => {
                video.deleteVideo(id)
                    .then(response =>{
                    this.$message({
                        type: 'success',
                        message: '删除小节成功!'
                    });
                    this.getChapterVideo()
                })
            }) 
        },

        //添加小节弹框的方法
        openVideo(chapterId) {
            this.dialogVideoFormVisible = true
            this.video.chapterId = chapterId
            //qingkong数据
            this.video.title='',
            this.video.sort=0,
            this.video.free=0,
            this.video.videoSourceId=''
        },
        //添加小节
        addVideo() {
            this.video.courseId = this.courseId
            video.addVideo(this.video)
                .then(response => {
                    this.dialogVideoFormVisible = false
                    this.$message({
                        type: 'success',
                        message: '添加小节成功!'
                    });
                    this.getChapterVideo()
                })
        },
        saveOrUpdateVideo() {
            this.addVideo()
        },
    //删除章节
    removeChapter(chapterId){
       this.$confirm('此操作将删除章节记录, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).then(() => { 
                chapter.deleteChapter(chapterId)
                    .then(response =>{
                    this.$message({
                        type: 'success',
                        message: '删除成功!'
                    });
                    this.getChapterVideo()
                })
            })
    },
    //修改章节弹框数据回显
    openEditChapter(chapterId){
      //弹框
      this.dialogChapterFormVisible=true
         chapter.getChapter(chapterId).then(response =>{
           this.chapter=response.data.chapter
         })
    },
    openChapterDialog() {
      this.dialogChapterFormVisible = true
        //表单数据清空
        this.chapter.title = ''
        this.chapter.sort = 0
        },
     updateChapter(){
       chapter.updateChapter(this.chapter)
       .then(response =>{
         this.dialogChapterFormVisible=false
          this.$message({
            type:'success',
            message:'修改章节成功！'
          });
          this.getChapterVideo()
      })
},
        //修改章节
    saveOrUpdate(){
     if(!this.chapter.id){
       this.addChapter()
     }else{
       this.updateChapter()
     }
    },
    addChapter(){
       this.chapter.courseId=this.courseId
      chapter.addChapter(this.chapter).then(response =>{
        this.dialogChapterFormVisible=false
          this.$message({
            type:'success',
            message:'添加章节成功！'
          });
          this.getChapterVideo()
      })
    },
    getChapterVideo(id) {
      chapter.getAllChapterVideo(id).then(response => {
        this.chapterVideoList = response.data.allChapterVideo;
      });
    },
    previous() {
      this.$router.push({ path: "/course/info/" + this.courseId });
    },
    next() {
      this.$router.push({ path: "/course/publish/" + this.courseId });
    }
  }
};
</script>
<style scoped>
.chanpterList {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}
.chanpterList li {
  position: relative;
}
.chanpterList p {
  float: left;
  font-size: 20px;
  margin: 10px 0;
  padding: 10px;
  height: 70px;
  line-height: 50px;
  width: 100%;
  border: 1px solid #ddd;
}
.chanpterList .acts {
  float: right;
  font-size: 14px;
}

.videoList {
  padding-left: 50px;
}
.videoList p {
  float: left;
  font-size: 14px;
  margin: 10px 0;
  padding: 10px;
  height: 50px;
  line-height: 30px;
  width: 100%;
  border: 1px dotted #ddd;
}
</style>